I have a similar situation to A_Lee, however in my case the schedule change resulted in me requesting a new flight which allows a more reasonable connection.

IC agreed and the new flight is showing as confirmed on the main page of checkmytrip. However when I check the eticket page, there is a segment missing (neither old nor new flight there).

The agent said he would forward the booking to the ticketing department. I then asked him if the ticked needed re-ssuing to which he aswered no.

Is there anything I need to be aware of in this situation?

Many thanks for your advice.